CN213004752U - A kind of tweezers - Google Patents
A kind of tweezers Download PDFInfo
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- CN213004752U CN213004752U CN202021426117.3U CN202021426117U CN213004752U CN 213004752 U CN213004752 U CN 213004752U CN 202021426117 U CN202021426117 U CN 202021426117U CN 213004752 U CN213004752 U CN 213004752U
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Abstract
The utility model discloses a pair of tweezers for clamping a cylindrical metallographic sample for chemical corrosion, the tweezers comprise two elastic clamping arms, each elastic clamping arm is provided with a connecting end and a clamping end which are oppositely arranged along the length direction, the two connecting ends of the two elastic clamping arms are connected, and the two clamping ends of the two elastic clamping arms can move along the clamping direction which is close to each other to clamp a spacing columnar sample; wherein, the length adjustable setting of two elastic clamping arm. The utility model discloses a tweezers can press from both sides not unidimensional cylinder metallographic specimen through the length of adjusting the elasticity arm lock, and the commonality is better, simple structure.
Description
Technical Field
The utility model relates to an utensil technical field, in particular to tweezers.
Background
The tweezers are an appliance for clamping articles, and the requirements on the tweezers are different for different purposes. In the preparation process of the metallographic structure of the metal material, tweezers are needed in the operation process of corroding the cylindrical metallographic specimen. The maximum distance between the clamping heads of the existing tweezers is fixed, and the same tweezers cannot be used for clamping a metallographic sample of a larger cylinder.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a tweezers aims at improving prior art, the technical problem that tweezers's arm lock length can not be adjusted.
In order to achieve the above object, the present invention provides a tweezers, including:
the two elastic clamping arms are provided with connecting ends and clamping ends which are oppositely arranged along the length direction of the elastic clamping arms, the two connecting ends of the two elastic clamping arms are connected, and the two clamping ends of the two elastic clamping arms can move along the clamping direction which is close to each other so as to clamp a limiting column type sample;
wherein, the length adjustable setting of two elastic clamping arm.
Optionally, the elastic clamping arm comprises a clamping arm body and a clamping portion adjustably arranged on the clamping arm body along the length direction of the clamping arm body, and the clamping portion constitutes a clamping end of the elastic clamping arm.
Optionally, one of the clamping arm body and the clamping portion is provided with a plurality of connecting structures along the length direction thereof, and the other clamping arm body is provided with a docking structure, wherein the docking structure is used for being connected with different connecting structures, so that the clamping portion is adjustable along the length direction of the clamping arm body.
Optionally, the abutting structure is provided with at least two elastic clamping arms at intervals along the length direction of the elastic clamping arms.
Optionally, the connecting structure is a threaded hole, and the docking structure is a screw fitting in screw fit with the threaded hole; alternatively, the first and second electrodes may be,
the connecting structure is a magnetic attraction piece, and the butt joint structure is a magnetic mating piece attracted with the magnetic attraction piece; alternatively, the first and second electrodes may be,
the connecting structure is arranged as a clamping groove, and the butt joint structure is arranged as a clamping protrusion buckled with the clamping groove.
Optionally, the clamping portion includes a clamping plate, two clamping plates of the two elastic clamping arms have two opposite clamping surfaces, and the clamping surfaces of the clamping plates are arranged in an arc surface shape suitable for the side wall shape of the columnar sample.
Optionally, the clamping portion further includes a connecting arm, one end of the connecting arm is adjustably disposed on the corresponding clamping arm body along the length direction of the elastic clamping arm, and the other end of the connecting arm is bent and extended towards a direction away from the other clamping arm body and then fixed to the corresponding clamping plate.
Optionally, the clamping portion further includes a reinforcing member, and the reinforcing member is disposed at a bent portion of the connecting arm to support the bent portion.
Optionally, the outer surface of the resilient clip arm at least at the clip end is provided with an anti-corrosion coating.
Optionally, the forceps are made of martensitic stainless steel.
The utility model provides an among the technical scheme, the length of two elasticity arm lock can be adjusted, gets not unidimensional cylinder metallographic specimen through the elasticity arm lock of adjusting different length clamp, and the commonality is better, simple structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of tweezers provided by the present invention;
figure 2 is a side view of the forceps of figure 1.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if the present invention relates to a directional indication, the directional indication is only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. Moreover, the technical solutions in the embodiments can be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The tweezers are an appliance for clamping articles, and the requirements on the tweezers are different for different purposes. In the preparation process of the gold structure of the metal material, tweezers are needed in the operation process of corroding the metallographic specimen of the cylinder. The maximum distance between the clamping heads of the existing tweezers is fixed, and the same tweezers cannot be used for clamping a metallographic sample of a larger cylinder.
In view of this, the utility model provides a tweezers aims at improving the technical problem that the length of the arm lock of tweezers can not be adjusted among the prior art. Fig. 1 to fig. 2 show an embodiment of tweezers according to the present invention.
Referring to fig. 1, the present embodiment provides a pair of tweezers 100, including:
the two elastic clamping arms are provided with connecting ends and clamping ends which are oppositely arranged along the length direction of the elastic clamping arms, the two connecting ends of the two elastic clamping arms are connected, and the two clamping ends of the two elastic clamping arms can move along the clamping direction which is close to each other so as to clamp a limiting column type sample;
wherein, the length adjustable setting of two elastic clamping arm.
In the technical scheme that this embodiment provided, two elasticity arm lock symmetries set up, and two elasticity arm lock are connected at the junction department, and two exposed core of two elasticity arm lock can move in opposite directions for press from both sides and get cylinder metallographic specimen and carry out chemical corrosion. The length of two elastic clamping arms is adjustable, namely the distance from the connecting end to the clamping end can be adjusted. When the length of the two elastic clamping arms is adjusted to be shorter, the tweezers 100 are suitable for clamping a cylindrical metallographic specimen with a smaller size for chemical corrosion. When meetting the great cylinder metallographic specimen of size, then through adjusting the length that the distance of link to exposed core is elastic arm lock promptly, the cylinder metallographic specimen of getting bulky is got and is carried out the chemical corrosion. Compared with the prior art, the clamping device can clamp cylindrical metallographic samples with different sizes, and is better in universality.
Further, in this embodiment, the elastic clamping arm includes a clamping arm body 101 and a clamping portion adjustably disposed on the clamping arm body 101 along a length direction of the clamping arm body 101, and the clamping portion constitutes a clamping end of the elastic clamping arm. It can be understood that the number of the clamping arm bodies 101 and the number of the clamping parts are two corresponding to the number of the elastic clamping arms. The two elastic clamping arms symmetrically arranged are identical, and therefore, the clamping arm body 101 and the clamping part on one elastic clamping arm are selected for description. The clamping arm body 101 and the clamping portion are movably arranged relatively, and the clamping portion is movably arranged on the clamping arm body 101 and can move along the length direction of the clamping arm body, so that the length adjustment of the elastic clamping arm is realized. When the clamping portion moves upward along the clamping arm body 101, i.e., in a direction close to the connecting end, the relative distance between the clamping end (i.e., the clamping portion) and the connecting end is reduced, and the length of the whole elastic clamping arm is shortened; when the clamping portion moves downward along the clamping arm body 101, i.e., in a direction away from the connecting end, the relative distance between the clamping end (i.e., the clamping portion) and the connecting end increases, and the length of the entire elastic clamping arm is thus increased. The elastic clamping arm length can be adjusted by adjusting the position of the clamping part in the length direction of the clamping arm body 101, and the elastic clamping arm is simple in structure and convenient to operate.
Further, in this embodiment, one of the clamp arm body 101 and the clamping portion is provided with a plurality of connecting structures along the length direction thereof, and the other is provided with a docking structure, and the docking structure is used for being connected with different connecting structures, so that the clamping portion is adjustable along the length direction of the clamp arm body. A plurality of connecting structures distributed at intervals are arranged in the length direction of the clamping arm body 101 or the clamping part, and then butt joint structures connected with the connecting structures are correspondingly arranged on the clamping part or the clamping arm body 101. The docking structure is connected to the connecting structure at different positions in the length direction, and the relative distance between the clamping portion (i.e., the clamping end) and the connecting end above the clamping arm body 101 is different.
Furthermore, in this embodiment, the abutting structure is provided with at least two elastic clamping arms at intervals along the length direction of the elastic clamping arms. Set up two butt joint structure at least and can make the clamping part better fix on arm-lock body 101, set up two butt joint structure at least in addition and all be located same straight line in addition and can effectually prevent to take place relative rotation between clamping part and the arm-lock body 101.
Furthermore, the specific forms of the connecting structure and the abutting structure are various. The connecting structure is a threaded hole 102, and the butt joint structure is a threaded connector 103 in threaded fit with the threaded hole; the connecting structure is a magnetic attraction piece, and the butt joint structure is a magnetic mating piece attracted with the magnetic attraction piece; or the connecting structure is a clamping groove, and the butt joint structure is a clamping protrusion buckled with the clamping groove. In the embodiment, five threaded holes 102 distributed at intervals are arranged in the length direction of the clamping arm body 101, and the five threaded holes 102 distributed at intervals are arranged in the length direction of the clamping arm body 101 to form a connecting structure; then, a butt joint structure, namely a threaded connection piece 103, is arranged at one end, close to the clamping arm body 101, of the clamping part, the threaded connection piece 103 is in threaded connection with the threaded hole 102, and when the position needs to be adjusted, the threaded connection piece 103 is unscrewed and is replaced on the threaded hole 102 at other positions. In addition, the clamping part is more convenient to replace by adopting a threaded mode.
Further, in the present embodiment, the clamping portion includes a clamping plate 104, two clamping plates 104 of the two elastic clamping arms have two opposite clamping surfaces, and the clamping surfaces of the clamping plates 104 are arranged in an arc shape to adapt to the shape of the side wall of the columnar test sample. The two ends of the clamping plate 104 are bent inwards (i.e. in the clamping direction) to form an arc shape which is adapted to the outer surface of the metallographic specimen of the cylinder. When the existing tweezers are used for clamping a cylindrical metallographic specimen, the clamping direction of the clamping head is difficult to be vertical to the surface to be corroded of the cylindrical metallographic specimen, so that the corroded surface is uneven, and the corrosion effect is poor. The clamping plate 104 provided by the embodiment enables the clamping direction of the clamping plate 104 to be perpendicular to the surface to be corroded of the cylindrical metallographic specimen when the forceps 100 clamp the cylindrical metallographic specimen, so that the corroded surface is more uniform, and the corrosion effect is better.
In addition, because the surface of the cylindrical metallographic specimen is smooth, the cylindrical metallographic specimen is very difficult to clamp by using the existing tweezers, so that the corrosion time is not easy to control. The splint 104 that this embodiment provided has increased the area of contact on splint 104 and cylinder metallographic specimen surface, and then has increased the friction between splint 104 and the cylinder metallographic specimen surface for the centre gripping is changeed, control centre gripping time that can be better.
Further, in this embodiment, the clamping portion further includes a connecting arm 105, one end of the connecting arm 105 is adjustably disposed on the corresponding clamping arm body 101 along the length direction of the elastic clamping arm, and the other end of the connecting arm is bent and extended in a direction away from the other clamping arm body 101 and then fixed to the corresponding clamping plate 104. The other end of the connecting arm 105 is bent away from the other arm body 101, that is, the connecting arm 105 is folded outwards in the thickness direction of the arm body 101 by 90 degrees 2 times. The advantage of this design is that the distance between the two clamping plates 104 connected to the two side connecting arms 105 can be increased, so that a cylindrical metallographic specimen of a larger size can be gripped without the need for the two resilient clamping arms to open at a particularly large angle.
Further, in this embodiment, in order to prevent the tweezers 100 from being damaged when encountering a highly corrosive solution, the grasping portion of the tweezers 100 is not damaged. And an anti-corrosion coating is arranged on the outer surface of the elastic clamping arm at least at the clamping end. The corrosion-resistant coating is a layer of epoxy resin with the thickness of 0.15 mm.
The forceps 100 is made of martensitic stainless steel.
The aforesaid only is the optional embodiment of the utility model discloses a to not consequently restrict the patent scope of the utility model, all be in the utility model discloses a under the utility model conceiving, utilize the equivalent structure transform that the content of the description and the attached drawing was done, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. Forceps, comprising:
the two elastic clamping arms are provided with connecting ends and clamping ends which are oppositely arranged along the length direction of the elastic clamping arms, the two connecting ends of the two elastic clamping arms are connected, and the two clamping ends of the two elastic clamping arms can move along the clamping direction which is close to each other so as to clamp a limiting column type sample;
wherein, the length adjustable setting of two elastic clamping arm.
2. The forceps of claim 1, wherein the resilient arms include arm bodies and gripping portions adjustably mounted to the arm bodies along the length of the arm bodies, the gripping portions forming gripping ends of the resilient arms.
3. The forceps of claim 2, wherein one of the arm body and the gripping portion has a plurality of attachment structures along its length and the other has an abutment structure for attachment to a different one of the attachment structures, such that the gripping portion is adjustable along the length of the arm body.
4. The forceps of claim 3, wherein the docking structure includes at least two spaced apart resilient arms along the length of the resilient arms.
5. The forceps of claim 3, wherein the attachment structure is configured as a threaded hole and the docking structure is configured as a threaded member that threadably engages the threaded hole; alternatively, the first and second electrodes may be,
the connecting structure is a magnetic attraction piece, and the butt joint structure is a magnetic mating piece attracted with the magnetic attraction piece; alternatively, the first and second electrodes may be,
the connecting structure is arranged as a clamping groove, and the butt joint structure is arranged as a clamping protrusion buckled with the clamping groove.
6. The forceps of claim 2, wherein the clamping portion comprises a clamping plate, and the two clamping plates of the two elastic clamping arms have two opposite clamping surfaces, and the clamping surfaces of the clamping plates are arranged in an arc shape so as to be suitable for the shape of the side wall of the columnar sample.
7. The forceps according to claim 6, wherein the holding portion further includes a connecting arm, one end of the connecting arm is adjustably disposed on the corresponding arm body along the length direction of the elastic arm, and the other end of the connecting arm is bent and extended away from the other arm body and then fixed to the corresponding clamping plate.
8. The forceps of claim 7, wherein the gripping portion further comprises a reinforcing member disposed at the bend of the connecting arm to support the bend.
9. The forceps of claim 1, wherein the outer surfaces of the resilient clip arms at least at the gripping ends are provided with an anti-corrosion coating.
10. The forceps of claim 1, wherein the forceps are made of martensitic stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021426117.3U CN213004752U (en) | 2020-07-17 | 2020-07-17 | A kind of tweezers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021426117.3U CN213004752U (en) | 2020-07-17 | 2020-07-17 | A kind of tweezers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213004752U true CN213004752U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021426117.3U Active CN213004752U (en) | 2020-07-17 | 2020-07-17 | A kind of tweezers |
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| CN (1) | CN213004752U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323886A (en) * | 2021-12-21 | 2022-04-12 | 上海交通大学 | Hand-held type metallographic specimen of accurate control time corrodes and uses clamping tool |
| EP4318543A1 (en) * | 2022-08-02 | 2024-02-07 | Leica Mikrosysteme GmbH | Sample holder for holding a sample carrier, handling tool and corresponding methods |
-
2020
- 2020-07-17 CN CN202021426117.3U patent/CN213004752U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323886A (en) * | 2021-12-21 | 2022-04-12 | 上海交通大学 | Hand-held type metallographic specimen of accurate control time corrodes and uses clamping tool |
| CN114323886B (en) * | 2021-12-21 | 2023-11-17 | 上海交通大学 | Handheld metallographic specimen corrosion clamping tool capable of accurately controlling time |
| EP4318543A1 (en) * | 2022-08-02 | 2024-02-07 | Leica Mikrosysteme GmbH | Sample holder for holding a sample carrier, handling tool and corresponding methods |
| WO2024028223A1 (en) * | 2022-08-02 | 2024-02-08 | Leica Mikrosysteme Gmbh | Sample holder for holding a sample carrier, handling tool and corresponding methods |
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Effective date of registration: 20211008 Address after: 518005 agricultural science and technology building, No. 1085, south of chaguang Road, Xili street, Nanshan District, Shenzhen, Guangdong Patentee after: Shenzhen Institute of quality and safety inspection and testing Address before: 518001 special inspection building, 1032 Honggang Road, Qingshuihe street, Luohu District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND TEST |